Quote Originally Posted by lerameur View Post
I want to isolate the circuit . There was too much harmonics on the ground, it was killing the microcontroller.
what about an opto coupler ?
I am also looking some amplifier , any thoughts on this one: ISO124
Hi leramuer,
about 35 years ago I worked for a company that made audio gear for radio stations and such. I remember, talking to the engineers about ground loops and they advised using 1 common tie point for all grounds, period. You might try that for the problem you mentioned.
JS